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  <title>Document</title>
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<body>
  <script>
    // function getHe(n,m){
    //   console.log(n+m);
    // }
    // getHe(4,6)    

     function getShu(){
      for(let i =1;i<=n;i++){
           
      }
     }

      //  注意细节，函数名上下要一致，形参跟实参个数要一致
       
  </script>
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